# Copyright (c) 2013 Spotify AB
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

import multiprocessing.pool
import numpy
from common import TestCase
from annoy import AnnoyIndex


class ThreadingTest(TestCase):
    def test_threads(self):
        n, f = 10000, 10
        i = AnnoyIndex(f, 'euclidean')
        for j in range(n):
            i.add_item(j, numpy.random.normal(size=f))
        i.build(10)

        pool = multiprocessing.pool.ThreadPool()
        def query_f(j):
            i.get_nns_by_item(1, 1000)
        pool.map(query_f, range(n))

